Question

How much time will be required for a sample of H-3 to lose 75% of its radioactivity? The half-life of tritium is 12.26 years.

A) 6.13 years
B) 12.26 years
C) 24.52 years
D) 18.39 years

Answer 1

To solve this problem, we can use the concept of half-life. The half-life of tritium is 12.26 years. Using the formula T = t₁/2 * log(100%/remaining radioactivity percentage), we can determine that the sample will lose 75% of its radioactivity in 12.26 years.

Step-by-step explanation:

To solve this problem, we can use the concept of half-life. The half-life of an isotope is the time it takes for half of the sample to decay. In this case, the half-life of tritium is 12.26 years. To determine how much time will be required for a sample of H-3 to lose 75% of its radioactivity, we can use the formula:

T = t₁/2 * log(100%/remaining radioactivity percentage)

Plugging in the values, we have T = 12.26 * log(100%/25%) = 12.26 years. Therefore, the correct answer is B) 12.26 years.